B-LOC Shrink Disc 125-10

The B-LOC SD10 Series 125-10 Shrink Disc is an external locking device that provides a high capacity, zero-backlash shaft to hub on shafts ranging from 3-1/2” to 4.031” in diameter by means of a mechanical interference fit and transmits between 13710 ft lbs and 19540 ft lbs of torque depending on the specific shaft size.

Best Suited For: Applications needing to connect a hollow shaft over a solid shaft. Commonly used on hollow output shaft gear boxes or flange couplings.

B-LOC SD10 Series 125-10 Shrink Discs are external locking devices that provide a zero-backlash frictional connection that will never wear or pound out and can accommodate high-torque, thrust, bending, and/or radial loads. The SD10 Series Shrink Discs are also extremely concentric and maintain a well-balanced mechanical interference fit. There is no axial movement during installation of this product.

All Fenner Drives keyless locking devices operate using the simple wedge principle. An axial force is applied- by either a hex nut (Trantorque) or a series of annular screws (B-LOC)- to engage circular steel rings with mating tapers. The resulting wedge action creates a radial force on the tapered rings, one of which contracts to squeeze the shaft while the other expands and presses into the component bore.

Series:
SD

Axial Movement:
No

Installation Torque:
44 ft lb

Internal/ External:
External

Material:
Zinc Chromate/Chrome Plated Steel

Metric/Inch:
Inch

Releasing/ Locking:
Releasing

Screw Size:
M10 x 40

Self-Centering:
Yes

Shaft Diameter:
3.500-4.031

Taper:
Double

Torque Max:
19540

Torque Min:
13710

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